Slapper.Automapper 与 Dapper.net 使用 Guid Id

nii*_*ico 4 dapper slapper.automapper

我需要使用 Dapper.net 将一对多扁平化 SQL 查询映射到嵌套对象中。

Slapper.Automapper 似乎是做到这一点的好方法;正如这个问题的答案中所详细说明的:

如何在 Dapper.Net 中编写一对多查询?

我使用 Guid 得到的错误数据集: 在此输入图像描述

public string MrFlibble3()
{
    using (var connection = new SqlConnection(Constr))
    {
        Slapper.AutoMapper.Cache.ClearInstanceCache();

        const string sql = @"SELECT tc.[IDG] as ContactIdg
                                ,tc.[ContactName] as ContactName
                                ,tp.[Idg] AS TestPhones_PhoneIdg
                                ,tp.[ContactIdg] AS TestPhones_ContactIdg
                                ,tp.[Number] AS TestPhones_Number
                                FROM TestContact tc
                                INNER JOIN TestPhone tp ON tc.Idg = tp.ContactIdg";

        // Step 1: Use Dapper to return the  flat result as a Dynamic.
        dynamic test = connection.Query<dynamic>(sql);

        // Step 2: Use Slapper.Automapper for mapping to the POCO Entities.
        // - IMPORTANT: Let Slapper.Automapper know how to do the mapping;
        //   let it know the primary key for each POCO.
        // - Must also use underscore notation ("_") to name parameters;
        //   see Slapper.Automapper docs.
        Slapper.AutoMapper.Configuration.AddIdentifiers(typeof(TestContact), new List<string> { "ContactIDg" });
        Slapper.AutoMapper.Configuration.AddIdentifiers(typeof(TestPhone), new List<string> { "PhoneIdg" });

        var testContact = (Slapper.AutoMapper.MapDynamic<TestContact>(test) as IEnumerable<TestContact>).ToList();

        string flibblethis = "";

        foreach (var c in testContact)
        {
            foreach (var p in c.TestPhones)
            {
                // Console.Write("ContactName: {0}: Phone: {1}\n", c.ContactName, p.Number);
                flibblethis += "Contact Name: " + c.ContactName + ". Number: " + p.Number + "<br />";
            }
        }

        return flibblethis;
    }
}
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它在示例中运行良好 - 但如果 Id 是 Guid 而不是整数,则 Slapper.Automapper 似乎不起作用。

有没有办法将 Guid ID 与 Slapper.Automapper 一起使用 - 或者是否有其他方法可以使用 Dapper.net 来映射它?

(Slapper.Automapper 没有被广泛使用,我在网上看不到任何关于这个问题的信息)。

Flo*_*der 5

您的属性名称中有不同的大写和小写字母,例如ContactIdgContactIDg。Slapper 区分大小写的映射,请参阅此问题